Wheels BSA Threaded Bottom Bracket. Features: External BSA, English threaded bottom brackets featuring anodized aluminum cups with Enduro sealed bearings Mountain version for 73mm or 68mm bottom bracket shells Compatible with 30mm diameter cranks with a spindle length of at least 104mm Base: Enduro ABEC 3 sealed bearings Will not work with standard BB30 cranksets, please measure your BB30 crank spindle length Specifications: Frame Interface: BSA/English Threaded Spindle Interface: 30mm (RaceFace/Easton Cinch, 386 EVO, Rotor 3D+, e*Thirteen P3 Connect, Zipp Vuma) Bottom Bracket Shell ID: 1.37 Shell Width: 68mm, 73mm Spindle Length: 104mm and Wider Material: Aluminum Cups Color: Black Weight: 102g